about gun safety. >>> president obama's united nations address began with a tribute to chris stevens. mr. obama called on the world leaders to join him in condemning the violence that killed stevens and three american staffers in the u.s. consulate in benghazi, libya. the president then explained to world leaders why the u.s. cannot ban a youtube clip blamed for much of the violence in the middle east. the clip insults t s ths the pr muhammad. >> as president of our country and commander in chief of our military, i accept that people are going to call me awful things every day, and i will always defend their right to do so. >>. [ applause ] >> president obama said there is no speech that justifies mindless violence and promised stevens' killers will be brought to justice. the president also discussed hope that concerns over iran's nuclear programs can be addressed through diplomacy. >>> from heartache to hope, it's a bittersweet day for a peninsula family whose loss of a child could help save the lives of others. doug and linda studebaker spoke at their home with assemblyman